Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual método tem um registro de 4-0?
 ###Tabelas: CREATE TABLE michigan_119_michigan_agricultural_0 (michigan_119_michigan_agricultural_0_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Touchdowns INT, Extra points INT, Field goals INT, Points INT) CREATE TABLE passenger_car_models (passenger_car_models_id AUTO_INCREMENT PRIMARY KEY, Type VARCHAR, Construction period VARCHAR, Cylinder VARCHAR, Capacity VARCHAR, Power VARCHAR, Vmax VARCHAR) CREATE TABLE kickboxing_record (kickboxing_record_id AUTO_INCREMENT PRIMARY KEY, Result VARCHAR, Record VARCHAR, Opponent VARCHAR, Method VARCHAR, Location VARCHAR) CREATE TABLE cantonal_school_systems (cantonal_school_systems_id AUTO_INCREMENT PRIMARY KEY, Canton VARCHAR, Years of Kindergarten INT, Years of Kindergarten provided VARCHAR, Years of Kindergarten legally required VARCHAR, Length of Primary School INT, Length of mandatory Secondary School INT, Separate Secondary Schools? VARCHAR, Cooperative Secondary Schools? VARCHAR, Integrated Secondary Schools? VARCHAR) CREATE TABLE kansas_city_comets (kansas_city_comets_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Division VARCHAR, League VARCHAR, Reg. Season VARCHAR, Playoffs VARCHAR, Avg. Attendance INT)  
SELECT Method FROM kickboxing_record WHERE Record = 4-0